precocious
[prɪˈkoʊʃəs]
adj.
早熟的;
较早具备某种能力的;
较早显出的;
（儿童）老气的;
例句:
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Get a precocious-sounding title to put on your resume.
来自WSJ
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Sue is a thoroughly precocious little madam if ever there was one.
休确实是个少见的早熟的小丫头。
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From childhood, he was evidently at once rebellious and precocious.
从儿时起，他就明显地既叛逆又早熟。
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a precocious child who started her acting career at the age of 5
5岁便开始演艺生涯的超常儿童
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My brother Ninian had been sexually precocious.
来自J. I. M. Stewart
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I was a precocious reader.
来自R. Church